Lined pipe.



,PATENTED MA311 pP'. MoMMERT-z. f,

LIN ED PIPE. APPLICATION rInBD sumo, 1904.

required hardness and smoothness.

Patented March 21, 1905.

UNITED STATES PATENT OFFICE.

PETER MOMMERTZ, OF MARXLOH, NEAR RUHRORT, GERMANY.

LINED PIPE.

SPECIFICATION forming part of Letters Patent No. 785,176, dated March2.1, 1905.

Application ned september 2o, 1904. serial No. 225,230.

To fall wim/n, it may concern:

Be it known that I, PETER MoMIiIER'Iz, a citi- Zen of the German Empire,residing at Marxloh, near Ruhrort, Germany, have invented certain newand useful Improvements in Lined Pipes, of which the following is aspecification.

In filling worked-out excavations in mines pipe-conduits are usedthrough which sand, ground slag, or other sInall-grained materials arepassed by means of washing. These pipes are, however, usually worn outvery soon. owing to the friction of the sharp-edged material passingthrough.

My invention relates vto a construction which intends to remove thisdisadvantage. .lt is illustrated on the drawings herewith, in which-Eigu re 1 is a section of a vertical pipe-conduit, and Fig. 2 across-section of the same, while Fig. 3 is a longitudinal section of apipe tion of the position, and Fig. 4 a cross-secin inclined latter. Y

As shown by the said figures, I provide the pipes r with a linirlgf,consisting et' a glass tube or of stone, porcelain, steel,.or any hardmaterial suitable to resist friction. -As this lining` `is protected bythe inclosing pipe,- it matters not if it iscomposed of a materialliable to break, if it is only possessed of the If the material of thelining should so require, as in case of glass, porcelain, or the like,it may as well be protected by a further lining of wiregauze or othersuitable protector.

I prefer to use as pipe-conduits pipes of cast or wrought iron providedwith fianges at the ends, where the adjoining pipes may be .united bybolts after having received the lining described. The latter may consistof entire pipes of any of the aforesaid materials and may in verticalconduits be loosely inserted, each tubular piece being placed one abovethe other and tightly pressed upon each other, when the iron pipescomposing the conduit are fastened together by turning the screw-boltsuniting the flanges. Between the pipe and the lining there may beinserted any suitable packing. If thelining is so inserted that itprojects somewhat from the ends of the pipes, it will at the same timework as a good seal of the joints of the pipe-conduits. Anyrequired-knee or elbow pieces should be circular-shaped to admit thelining. The lining inserted as described will fully protect the pipe,and when it is worn out it may be easily removed and replaced by newmaterial.

When the said pipe-conduits are laid horizontal or inclined, as shown byFig. 3,-it is not necessary to insert in .the pipes entire tubes; but atrough or gutter covering the bpttom half of the pipe will be suiicient,as only this part is exposed to the sand. The gutter-lining pieces areprovided with ribs 2, by which they rest in the pipe, and the spacebetween the lining and the pipe maybe filled with sawdust, peat, orsimilar packing a.

.Having now fully described the nature of my invention, whatI claim asnew, and desire to protect by Letters Patent, is

In a pipe, the combination of a pipe-section with a lining having ribsthat engage the pipe-section, and a packing intermediate the ribs,substantially as specified.

In testimony whereof I have hereunto subscribed my name in the presenceof two witnesses.

PETER MOMMERTZ.

